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Annotation of embedaddon/sudo/compat/nanosleep.c, revision 1.1.1.2

1.1       misho       1: /*
                      2:  * Copyright (c) 2009-2011 Todd C. Miller <Todd.Miller@courtesan.com>
                      3:  *
                      4:  * Permission to use, copy, modify, and distribute this software for any
                      5:  * purpose with or without fee is hereby granted, provided that the above
                      6:  * copyright notice and this permission notice appear in all copies.
                      7:  *
                      8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                      9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     15:  */
                     16: 
                     17: #include <config.h>
                     18: 
                     19: #include <sys/types.h>
                     20: #include <sys/time.h>
                     21: #ifdef HAVE_SYS_SELECT_H
                     22: #include <sys/select.h>
                     23: #endif /* HAVE_SYS_SELECT_H */
                     24: #if TIME_WITH_SYS_TIME
                     25: # include <time.h>
                     26: #endif
1.1.1.2 ! misho      27: #ifndef HAVE_STRUCT_TIMESPEC
1.1       misho      28: # include "compat/timespec.h"
                     29: #endif
                     30: #include <errno.h>
                     31: 
                     32: #include "missing.h"
                     33: 
                     34: int
                     35: nanosleep(const struct timespec *ts, struct timespec *rts)
                     36: {
                     37:     struct timeval timeout, endtime, now;
                     38:     int rval;
                     39: 
                     40:     timeout.tv_sec = ts->tv_sec;
                     41:     timeout.tv_usec = ts->tv_nsec / 1000;
                     42:     if (rts != NULL) {
                     43:        gettimeofday(&endtime, NULL);
                     44:        timevaladd(&endtime, &timeout);
                     45:     }
                     46:     rval = select(0, NULL, NULL, NULL, &timeout);
                     47:     if (rts != NULL && rval == -1 && errno == EINTR) {
                     48:        gettimeofday(&now, NULL);
                     49:        timevalsub(&endtime, &now);
                     50:        rts->tv_sec = endtime.tv_sec;
                     51:        rts->tv_nsec = endtime.tv_usec * 1000;
                     52:     }
                     53:     return rval;
                     54: }